Noob Feature Question: Programmable Computerized Zoom

blowupblowout

Noob Feature Question: Programmable Computerized Zoom

« on: 03 / April / 2020, 03:14:56 »

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Sorry if this isn't an appropriate place for this question (or if it's just generally a really silly one)

I would like a function where I would set a "start focal" and an "end focal length" and a "duration" and then be able to record a zoom (either video or a number of stills) for the chosen duration beginning with the chosen start and concluding with the chosen end focal lengths.

Is this an achievable function of CHDK? I stumbled across this while googling around trying to find a way to do this.

I'm open to purchasing a camera; whatever would be recommended to get the job done effectively but preferably affordably too haha

Thank in advance

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reyalp

12537

Re: Noob Feature Question: Programmable Computerized Zoom

« Reply #1 on: 03 / April / 2020, 03:51:30 »

Quote from: blowupblowout on 03 / April / 2020, 03:14:56

I would like a function where I would set a "start focal" and an "end focal length" and a "duration" and then be able to record a zoom (either video or a number of stills) for the chosen duration beginning with the chosen start and concluding with the chosen end focal lengths.

Is this an achievable function of CHDK? I stumbled across this while googling around trying to find a way to do this.

You can control zoom from CHDK script. Control of zoom speed is limited, it depends on the camera but most only have one or a few speeds. So for video you wouldn't be able to arbitrarily control the duration, but for stills you can change the zoom between shots.

If you want a lot of zoom and don't have other specific requirements, the SX cameras are probably the best option. Many of the very old cameras (mostly digic III and earlier) only have small number of zoom steps.

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Don't forget what the H stands for.

c_joerg

Re: Noob Feature Question: Programmable Computerized Zoom

« Reply #2 on: 03 / April / 2020, 05:41:01 »

Quote from: blowupblowout on 03 / April / 2020, 03:14:56

I would like a function where I would set a "start focal" and an "end focal length" and a "duration" and then be able to record a zoom (either video or a number of stills) for the chosen duration beginning with the chosen start and concluding with the chosen end focal lengths.

For pictures maybe that's interesting for you
https://chdk.setepontos.com/index.php?topic=13403.10

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